CN111980842B - Hydraulic generator oil sump cooling control system and method - Google Patents
Hydraulic generator oil sump cooling control system and method Download PDFInfo
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- CN111980842B CN111980842B CN202010899808.3A CN202010899808A CN111980842B CN 111980842 B CN111980842 B CN 111980842B CN 202010899808 A CN202010899808 A CN 202010899808A CN 111980842 B CN111980842 B CN 111980842B
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- cooling device
- cooling
- control box
- collecting tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a cooling control system and method for an oil collecting tank of a hydraulic generator. The system comprises a control box, a temperature sensor, a power switch, a relay, a contactor and a cooling device; the control box is provided with a PLC controller and a start-stop knob; the temperature sensor is connected with the PLC and used for detecting the oil temperature and sending data to the PLC; the cooling device is driven by a motor and is used for cooling the oil collecting tank; the power switch is connected with the motor and the start-stop knob, and the start-stop knob is used for manually controlling the power switch to control the cooling device to be switched on and off; the PLC controller is sequentially connected with the relay, the contactor and the motor of the cooling device in series, the PLC controller sends out control signals according to the oil temperature, and the control signals sequentially touch the relay and the contactor to control the cooling device. The method is characterized in that the system is applied to automatic monitoring of the oil collecting tank of the hydraulic turbine generator to ensure that the oil temperature of the oil collecting tank is within a normal controllable range, so that the normal operation of the whole hydraulic turbine generator set is ensured.
Description
Technical Field
The invention relates to the technical field of power generation, in particular to a cooling control system and method for an oil collecting tank of a hydraulic generator.
Background
In the running process of the hydraulic generator, due to the reasons of heat generation of lead current, eddy heating in an iron core, mechanical abrasion heating and the like, a large amount of heat is not generated, the oil temperature in the oil collecting tank is not improved after the heat is transmitted to the oil collecting tank, and if the heat is not dissipated and cooled in time, the oil temperature is extremely easy to exceed the normal running temperature (about 40 ℃) of a unit, so that various defects are caused. At present, the inventor does not find out that the related documents are published, which are specially used for automatically controlling the oil collecting tank of the hydraulic generator.
Disclosure of Invention
The invention aims to provide a cooling control system and method for an oil collecting tank of a hydraulic generator, which can automatically monitor the oil temperature of the oil collecting tank and avoid overhigh oil temperature.
In order to solve the technical problems, the invention adopts the following technical scheme:
in one aspect, the invention provides a hydro-generator oil sump cooling control system.
The cooling control system of the oil collecting tank of the hydraulic generator comprises a control box, a temperature sensor, a power switch, a relay, a contactor and a cooling device; a PLC controller is arranged in the control box, and a start-stop knob is arranged on the control box; the temperature sensor is arranged in the oil collecting tank and connected with the PLC, the temperature sensor is used for detecting the oil temperature of the oil collecting tank, and the measured oil temperature data are sent to the PLC; the cooling device is used for cooling the inside of the oil collecting tank and is driven by a motor; the power switch is connected between a motor of the cooling device and the start-stop knob, and the start-stop knob is used for manually controlling the on-off of the power switch so as to control the on-off of the cooling device; the PLC is sequentially connected with motors of the relay, the contactor and the cooling device in series, and is used for sending a starting control signal when the oil temperature is greater than or equal to a preset upper limit, starting the cooling device for cooling after the starting control signal successively touches the relay and the contactor, or sending a shutdown control signal when the oil temperature is less than or equal to a preset lower limit, and stopping the cooling device after the shutdown control signal successively touches the relay and the contactor.
As a further improvement:
the oil collecting tank cooling control system of the hydraulic generator further comprises a proximity switch, the proximity switch is close to a motor of the cooling device and connected with the PLC, and the proximity switch is used for detecting whether the motor operates and sending a detection result to the PLC
The control box is also provided with a starting indicator lamp and a stopping indicator lamp, the starting indicator lamp and the stopping indicator lamp are both connected with the PLC, the starting indicator lamp is normally on and used for indicating that the cooling device is in a working state, and the stopping indicator lamp is normally on and used for indicating that the cooling device is in a stopping state. In addition, still be equipped with reset button on the control box, reset button is connected with switch, and reset button is used for restarting cooling device's motor. In addition, still be equipped with the display screen on the control box, the display screen is connected with the PLC controller, and the display screen is used for showing the oil temperature that temperature sensor surveyed.
On the other hand, the invention also provides a cooling control method for the oil collecting tank of the hydraulic generator.
The method uses the oil collecting tank cooling control system of the hydraulic generator, and comprises the following steps:
1) the temperature sensor detects the oil temperature of the oil collecting tank of the hydraulic generator, and oil temperature data are sent to the control box and displayed; the approach switch detects whether the cooling device in the oil collecting tank operates or not, and a detection result is sent to the control box and displayed;
2) when the oil temperature is greater than or equal to the preset upper limit, a PLC (programmable logic controller) in the control box sends a starting control signal, the starting control signal successively touches a relay and a contactor, and then a cooling device is started to carry out cooling treatment;
when the oil temperature is less than or equal to the preset lower limit and the cooling device operates, the PLC in the control box sends a shutdown control signal, and the shutdown control signal successively touches the relay and the contactor, so that the operation of the cooling device is stopped.
As a further improvement:
the method also comprises a manual monitoring measure which is carried out after the step 2) fails; the manual monitoring is specifically as follows:
when the oil temperature is greater than or equal to the preset upper limit and the cooling device is not started, a power switch connected with the cooling device is directly started through start-stop rotation on the control box, so that the cooling device is started;
when the oil temperature is found to be less than or equal to the preset lower limit and the cooling device is not stopped, directly closing a power switch connected with the cooling device through start-stop rotation on the control box so as to stop the cooling device;
when the cooling device runs for a long time and the oil temperature is not less than or equal to the preset lower limit, the power switch can be restarted through a start-stop rotating or reset button on the control box, so that the cooling device is restarted to cool, and when the problem is not solved after restarting, the whole system is closed to overhaul.
The preset upper limit of the oil temperature is 45 ℃, and the preset lower limit of the oil temperature is 40 ℃ so as to ensure that the oil temperature is stably controlled below 40 ℃.
The invention has the beneficial effects that:
according to the invention, the PLC, the temperature sensor, the power switch, the relay, the contactor, the cooling device and other components are cooperatively used, so that a system capable of automatically controlling the oil temperature of the oil collecting tank of the hydraulic turbine generator is built, the system is applied to oil temperature monitoring, the oil temperature of the oil collecting tank is ensured to be in a normal controllable range, and the normal operation of the whole hydraulic turbine generator set is further ensured.
Drawings
Fig. 1 is a block diagram of a structure of a hydro-generator oil sump cooling control system according to the present invention.
Fig. 2 is a flowchart of a hydro-generator oil sump cooling control method of the present invention.
Detailed Description
Referring to fig. 1, the oil sump cooling control system of the hydraulic generator of the present embodiment includes a control box, a temperature sensor, a power switch, a relay, a contactor, a cooling device, and a proximity switch. A PLC controller is arranged in the control box, and a start-stop knob is arranged on the control box. The temperature sensor is arranged in the oil collecting tank and connected with the PLC, the temperature sensor is used for detecting the oil temperature of the oil collecting tank, and the measured oil temperature data are sent to the PLC. The cooling device is used for cooling the inside of the oil collecting tank and is driven by a motor. The power switch is connected between the motor of the cooling device and the start-stop knob, and the start-stop knob is used for manually controlling the on-off of the power switch so as to control the on-off of the cooling device. The PLC is used for sending a starting control signal when the oil temperature is greater than or equal to a preset upper limit, starting the cooling device to cool after the starting control signal successively touches the relay and the contactor, or sending a shutdown control signal when the oil temperature is less than or equal to a preset lower limit, and shutting down the cooling device after the shutdown control signal successively touches the relay and the contactor. The proximity switch is close to the motor of the cooling device and connected with the PLC controller, and the proximity switch is used for detecting whether the motor operates and sending a detection result to the PLC controller
The control box is also provided with a starting indicator light, a stopping indicator light, a reset button and a display screen. The start indicator lamp and the stop indicator lamp are both connected with the PLC, the start indicator lamp is normally on and used for indicating that the cooling device is in a working state, and the stop indicator lamp is normally on and used for indicating that the cooling device is in a stop state. The reset button is connected with the power switch and used for restarting the motor of the cooling device. The display screen is connected with the PLC controller and used for displaying the oil temperature measured by the temperature sensor.
Referring to fig. 2, a method for cooling control using the above control system includes the steps of:
1) the temperature sensor detects the oil temperature of the oil collecting tank of the hydraulic generator, and oil temperature data are sent to the control box and displayed; the proximity switch detects whether the cooling device in the oil collecting tank operates or not, and a detection result is sent to the control box and displayed;
2) in general, the system is in an automatic monitoring state, and at this time:
when the oil temperature is higher than or equal to a preset upper limit (45 ℃), a PLC (programmable logic controller) in the control box sends out a starting control signal, the starting control signal successively touches a relay and a contactor, and then a cooling device is started to carry out cooling treatment;
when the oil temperature is less than or equal to a preset lower limit (40 ℃) and the cooling device operates, a PLC (programmable logic controller) in the control box sends a shutdown control signal, and the shutdown control signal successively touches a relay and a contactor so as to shut down the operation of the cooling device;
3) when the automatic monitoring state is invalid, entering a manual monitoring state, and at the moment:
when the oil temperature is greater than or equal to the preset upper limit and the cooling device is not started, a power switch connected with the cooling device is directly started through start-stop rotation on the control box, so that the cooling device is started;
when the oil temperature is found to be less than or equal to the preset lower limit and the cooling device is not stopped, directly closing a power switch connected with the cooling device through start-stop rotation on the control box so as to stop the cooling device;
when the cooling device runs for a long time and the oil temperature is not less than or equal to the preset lower limit, the power switch can be restarted through a start-stop rotating or reset button on the control box, so that the cooling device is restarted to cool, and when the problem is not solved after restarting, the whole system is closed to overhaul.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The cooling control method for the oil collecting tank of the hydraulic generator is characterized by comprising the following steps of:
1) the temperature sensor detects the oil temperature of the oil collecting tank of the hydraulic generator, and oil temperature data are sent to the control box and displayed; the proximity switch detects whether the cooling device in the oil collecting tank operates or not, and a detection result is sent to the control box and displayed;
2) when the oil temperature is greater than or equal to the preset upper limit, a PLC (programmable logic controller) in the control box sends out a starting control signal, the starting control signal successively touches a relay and a contactor, and then the cooling device is started to cool; when the oil temperature is less than or equal to the preset lower limit and the cooling device operates, a PLC (programmable logic controller) in the control box sends a shutdown control signal, and the shutdown control signal successively touches a relay and a contactor so as to shut down the operation of the cooling device;
the cooling control method of the oil collecting tank of the hydraulic generator further comprises a manual monitoring measure, wherein the manual monitoring measure is carried out after the step 2) fails; the manual monitoring specifically comprises: when the oil temperature is greater than or equal to the preset upper limit and the cooling device is not started, a power switch connected with the cooling device is directly started through start-stop rotation on the control box, so that the cooling device is started; when the oil temperature is found to be less than or equal to the preset lower limit and the cooling device is not stopped, directly closing a power switch connected with the cooling device through start-stop rotation on the control box so as to stop the cooling device; when the cooling device runs for a long time and the oil temperature is not less than or equal to the preset lower limit, the power switch can be restarted through a start-stop rotating or reset button on the control box, so that the cooling device is restarted for cooling, and when the problem is not solved after restarting, the whole system is closed for maintenance;
the control method is based on a hydro-generator oil collecting tank cooling control system which comprises a control box, a temperature sensor, a power switch, a relay, a contactor and a cooling device; a PLC controller is arranged in the control box, and a start-stop knob is arranged on the control box; the temperature sensor is arranged in the oil collecting tank and connected with the PLC, the temperature sensor is used for detecting the oil temperature of the oil collecting tank, and the measured oil temperature data are sent to the PLC; the cooling device is used for cooling the inside of the oil collecting tank and is driven by a motor; the power switch is connected between a motor of the cooling device and the start-stop knob, and the start-stop knob is used for manually controlling the on-off of the power switch so as to control the on-off of the cooling device; the PLC is used for sending a starting control signal when the oil temperature is greater than or equal to a preset upper limit, starting the cooling device after the starting control signal successively touches the relay and the contactor to carry out cooling treatment, or sending a shutdown control signal when the oil temperature is less than or equal to a preset lower limit, and stopping the cooling device after the shutdown control signal successively touches the relay and the contactor;
the cooling control system of the oil collecting tank of the hydraulic generator further comprises a proximity switch, wherein the proximity switch is close to a motor of the cooling device and is connected with the PLC, and the proximity switch is used for detecting whether the motor operates and sending a detection result to the PLC;
the control box is also provided with a start indicator lamp and a stop indicator lamp, the start indicator lamp and the stop indicator lamp are both connected with the PLC, the start indicator lamp is normally on and used for indicating that the cooling device is in a working state, and the stop indicator lamp is normally on and used for indicating that the cooling device is in a stop state; the control box is also provided with a reset button, the reset button is connected with the power switch, and the reset button is used for restarting a motor of the cooling device; still be equipped with the display screen on the control box, the display screen is connected with the PLC controller, and the display screen is used for showing the oil temperature that temperature sensor surveyed.
2. The hydro-generator oil sump cooling control method according to claim 1, characterized in that: the preset upper limit of the oil temperature is 45 ℃ and the preset lower limit is 40 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899808.3A CN111980842B (en) | 2020-08-31 | 2020-08-31 | Hydraulic generator oil sump cooling control system and method |
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| CN202010899808.3A CN111980842B (en) | 2020-08-31 | 2020-08-31 | Hydraulic generator oil sump cooling control system and method |
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| CN111980842B true CN111980842B (en) | 2022-07-26 |
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| CN112943518B (en) * | 2021-02-09 | 2023-04-18 | 中国长江电力股份有限公司 | Hydraulic oil temperature control system and method for hydraulic turbine governor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2510824B (en) * | 2013-02-13 | 2016-05-04 | Romax Tech Ltd | Lubricant heating and cooling system for a wind or water turbine |
| CN205480146U (en) * | 2016-01-09 | 2016-08-17 | 云南新景电业有限公司 | Bearing oil refrigerated controlling means of horizontal hydrogenerator group |
| CN205503257U (en) * | 2016-01-27 | 2016-08-24 | 成都南玉电力设备有限公司 | Energy -saving coolant tank |
| CN206035708U (en) * | 2016-07-29 | 2017-03-22 | 天津市凯达重型水电设备制造有限公司 | Water -use for hydropower takes turns cooling system in advance |
| CN106710807B (en) * | 2016-11-30 | 2018-10-16 | 国网山东省电力公司青州市供电公司 | Transformer intelligent air-cooling system and its control method |
| CN107355337A (en) * | 2017-08-31 | 2017-11-17 | 太仓市华天冲压五金制品厂 | A kind of method of work of intelligent oil pressure control system |
| CN208939558U (en) * | 2018-10-31 | 2019-06-04 | 潍柴电力设备有限公司 | A kind of square cabin station and its cooling control system |
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